use rand;

pub fn add(left: usize, right: usize) -> usize {
    left + right
}
pub fn add_one(x:i32) -> i32{
    x+1
}
#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn it_works() {
        assert_eq!(3, add_one(2));
    }
}
